INDEX. 



455 



Numbers refer to Paragraphs. 



Magnetic force, Distribution of, 304. 



44 inclination or dip, 318. 



44 induction, 311, 312, 338. 



14 needles, 314, App. I, J. 



41 poles, 304, 306, 317. 



14 substances, 310. 

 Magnetism, Residual, 393. 



44 Terrestrial, 315, 316. 



44 Theory of, 308, 336. 



Magnetization, 320, 394. 

 Magnets, Broken, 307. 



44 Electro-, 393. 



" How made, 320, 394. 

 Magnifying-glass, 658. 

 Malleability defined, 50. 

 Malus's polariscope, 672. 

 Marcet's globe, 507. 

 Mariner's compass, 314. 

 Mariotte, 284, 285. 

 Mass defined, 4, 6. 

 Mathematical formulas, App. A. 

 Matter, Conditions of, 53. 

 44 defined, 2, 

 ' 4 Divisions of, 3. 

 " Properties of, 13. 

 Measures, 23-30, 34-36. 

 Mechanical effects of electricity, 369. 



" equivalent of heat, 566. 



Meter defined, 25. 

 Metric measures, 24-30, 35, 36. 

 Microscope, 658, 659. 

 Mirrors, Concave, 599-609. 



44 Convex, 610. 



Parabolic, 601 (a). 



44 Plane. 595-598. 

 Mobility defined, 40. 

 Molecules defined, 5, 6. 

 Moment offerees, 171, 172. 

 Momentum defined, 70. 

 Motion, Forms of, 8. 



44 Newton's laws of, 72, 73, 78, 93. 



44 of the pendulum, 139. 



" Reflected, 96, 97. 



44 Resultant, 79. 

 Multiple images, 598. 

 Music, 429, 430. 

 Musical instruments, 465-471. 



scale, 456, 457. 

 44 strings, 454, 455. 



Natural magnet, 302. 



Natural Philosophy defined, 12. 



Needles, Magnetic, 314. 



Newton's laws of motion, 72, 73, 78, 93 



Nicholson's hydrometer, 250. 



Nodal points or nodes, 460. 



Noise, 428. 



Non-luminous bodies, 580. 



O 



Ocean, The aerial, 271. 

 Opaque bodies, 581. 

 Opera-glass, 660. 

 Optical centre, 623. 

 Organ pipes, 469. 

 Oscillation, Centre of, 141. 



44 of pendulum, 140. 

 Overshot wheel, 261. 

 Overtones, 460, 462, 463. 



P 



Papin's digester, 506. 

 Paradox, Hydrostatic, 229. 

 Parallelogram of forces, 82. 

 Parallelepiped of forces, 90. 

 Pascal, 217, 218, 221, 276. 

 Pencil of light, 583. 

 Pendulum, Compensation, 149. 



Compound, 138. 



Cycloidal, 144. 



Laws of, 143, 145, 146. 



Motion of the, 139. 



Real length of, 142. 



Simple, 137. 



The second's, 147. 

 44 Uses of, 148. 

 Percussion develops heat, 563. 

 Philosophy, Natural, defined, 12, 162. 

 Phonograph, 447. 

 Photographer's camera, 656. 

 Physical change, 10. 



44 properties, 14, 15. 

 " science, 9. 

 Physics defined, 12, 162. 

 Physiological effects of electricity, 370, 



402. 



Pipes, Musical, 466-471. 

 Pitch of sound, 434-437. 



44 Absolute, 459, 

 Plane, Inclined, 198-204. 

 Plate electric machine, 345, 346. 

 Plating, Electro-, 399. 

 Pneumatics defined, 268. 

 Pointed conductors of electricity, 344. 



